Cellulolytic microorganisms control the availability of nitrogen in microcosm of shredded pruning litter treated highly acidic tea-growing soils of Assam in Northeast India

Pramanik, Prabhat; Safique, Shamina; Zahan, Ashrafa; Phukan, Manabjyoti; Ghosh, Swayambhu

doi:10.1016/j.apsoil.2017.07.026

Cited by 15 publications

(4 citation statements)

References 10 publications

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“…Notably, we found that the contents of NH 4 + -N and NO 3 − -N were higher in SM and FM than CK ( Figure 1 ). The mineralization of soil organic N is mainly controlled by soil environmental conditions and microbial activities ( Pramanik et al, 2017 ; Waldrop et al, 2017 ). For SM, long-term mulching has a good effect on insulation and can also increase soil organic matter content, which may create a favorable environment for soil microbial community involved in N transformation, thus enhancing the mineralization of organic N, which lead to the increase in soil mineral N ( Zhang et al, 2009 ; Yang et al, 2023 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of straw and plastic film mulching on microbial functional genes involved in soil nitrogen cycling

et al. 2023

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IntroductionMicroorganisms regulate soil nitrogen (N) cycling in cropping systems. However, how soil microbial functional genes involved in soil N cycling respond to mulching practices is not well known.MethodsWe collected soil samples from a spring maize field mulched with crop straw (SM) and plastic film (FM) for 10-year and with no mulching (CK) in the Loess Plateau. Microbial functional genes involved in soil N cycling were quantified using metagenomic sequencing. We collected soil samples from a spring maize field mulched with crop straw (SM) and plastic film (FM) for 10-year and with no mulching (CK) in the Loess Plateau. Microbial functional genes involved in soil N cycling were quantified using metagenomic sequencing.ResultsCompared to that in CK, the total abundance of genes involved in soil N cycling increased in SM but had no significant changes in FM. Specifically, SM increased the abundances of functional genes that involved in dissimilatory nitrate reduction to ammonium (nirB, napA, and nrfA), while FM decreased the abundances of functional genes that involved in ammonification (ureC and ureA) in comparison with CK. Other genes involved in assimilatory nitrate reduction, denitrification, and ammonia assimilation, however, were not significantly changed with mulching practices. The nirB and napA were derived from Proteobacteria (mainly Sorangium), and the ureC was derived from Actinobacteria (mainly Streptomyces). Mental test showed that the abundance of functional genes that involved in dissimilatory nitrate reduction was positively correlated with the contents of soil microbial biomass N, potential N mineralization, particulate organic N, and C fractions, while ammonification related gene abundance was positively correlated with soil pH, microbial biomass C and N, and mineral N contents.DiscussionOverall, this study showed that SM could improve soil N availability and promote the soil N cycling by increasing the abundance of functional genes that involved in DNRA, while FM reduced the abundance of functional genes that involved in ammonification and inhibited soil N cycling.

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Section: Discussionmentioning

confidence: 99%

Effects of straw and plastic film mulching on microbial functional genes involved in soil nitrogen cycling

et al. 2023

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“…Depending on the nature, pruning operation deposits 19 845–60 210 kg ha −1 plant residue (pruning litters) in soil. Pinkard and Beadle mentioned that stems may contribute up to 70% of the whole pruning residues, and that makes pruning litters very hard to degrade . Application of organic substrates in the agricultural field is required to sustain soil health.…”

Section: Discussionmentioning

confidence: 99%

Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem

Pramanik

Phukan

2019

J Sci Food Agric

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BACKGROUND: Tea (Camellia sinensis L.) bushes are periodically (at 3-4 year intervals) pruned (cut from top) to maintain vegetative growth stage and constant height. Plant residues (prunings litter) generated after pruning are generally left in the field as a potential source of organic matter in soil. Organic carbon (C) sequestration due to pruning litter incorporation is expected to increase microbial activity in soil. Being an evergreen plant, tea bushes assimilate atmospheric carbon dioxide (CO 2 ) throughout the year; however, the relation between decomposition of pruning litters and net CO 2 flux for tea plantation have not been studied before. The objective of this experiment was to evaluate the relation between organic C accumulation and microbial respiration in pruning litters incorporated soil and its subsequent effect on the net CO 2 flux from the atmosphere to tea plantation. RESULTS: Tea bushes assimilated 1878.2-2371.2 kg CO 2 ha −1 from the atmosphere within December to November; however, pruned bushes assimilated 1451.7-1840.8 kg CO 2 ha −1 within the same period. Decomposition of pruning litters added organic matter in soil, which was mostly accumulated in larger soil aggregates having 2.0-0.25 mm size. Such organic matter accumulation significantly increased microbial respiration in those aggregates, which in turn increased the overall rate of CO 2 emission from soil to the atmosphere. CONCLUSION: Decomposition of pruning litters leads to emission of 426.5-530.4 kg CO 2 ha −1 from soil. Hence, pruned areas recorded relatively lower (16.0-27.4%) net CO 2 flux from the atmosphere to tea ecosystem as compared to unpruned tea bushes.

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“…Inokulasi fungi selulolitik juga dilaporkan dapat meningkatkan kesuburan dan kesehatan media tanam (Pramanik et al, 2017;Fikrinda et al, 2020) sehingga mempengaruhi pertumbuhan tanaman (Fikrinda et al, 2019;Nasrullah et al, 2019) Berdasarkan pemikiran tersebut penelitian ini ingin mengetahui pengaruh fungi selulolitik dan jerami padi terhadap C-organik dan N-total tanah serta pertumbuhan jagung pada Inceptisol.…”

Section: Pendahuluanunclassified

STATUS KARBON ORGANIK DAN NITROGEN TOTAL TANAH SERTA PERTUMBUHAN JAGUNG (Zea mays L.) AKIBAT APLIKASI FUNGI SELULOLITIK INDIGENOUS DAN JERAMI PADI PADA INCEPTISOL ACEH

Disniwati

Khalil

Fikrinda

2021

JIMFP

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Abstrak. Produktivitas Inceptisol sebagai lahan budidaya dibatasi oleh rendahnya kadar bahan organik dan ketersediaan beberapa unsur hara makro. Penelitian ini menggunakan rancangan acak kelompok dengan tiga ulangan untuk menguji pengaruh aplikasi fungi selulolitik indigenous yang berasal dari Inceptisol Aceh (tanpa fungi selulolitik, Talaromyces pinophilus strain MR107 dan Purpureocillium lilacinum isolate PIGD23i) dan jerami padi (tanpa jerami padi, 10 t ha-1 dan 20 t ha-1) terhadap karbon (C-organik) dan nitrogen (N-total) tanah serta berat basah dan berat kering berangkasan atas tanaman pada Inceptisol. Hasil penelitian menunjukkan bahwa inokulasi kedua inokulan fungi selulolitik indigenous dan jerami padi pada berbagai dosis aplikasi memberikan pengaruh yang sama terhadap status C-organik dan N-total tanah serta pertumbuhan jagung pada Inceptisol Aceh.The Statuses Soil organic carbon and total nitrogen due to application of indigenous cellulolytic fungi and rice straw on Inceptisol’s AcehAbstract. The productivity of Inceptisols as cultivated land has problems in low organic matter and macronutrients. This study arranged in a randomized block design and three replications to examine the effect of indigenous cellulolytic fungi from Inceptisol Aceh and rice straw on soil organic carbon (SOC) and total nitrogen (total-N) and the weight of the upper part of the plant on Inceptisol. The cellulolytic fungi treatments were no cellulolytic fungi, Talaromyces pinophilus strain MR107 and Purpureocillium lilacinum isolate PIGD23i. The rice straw application consisted of without rice straw, 10 t ha-1, and 20 t ha-1. The results showed that both indigenous cellulolytic fungi and rice straw at various dose applications gave the same effect on the soil C-organic and N-total status and the maize growth on Inceptisols Aceh.

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Cellulolytic microorganisms control the availability of nitrogen in microcosm of shredded pruning litter treated highly acidic tea-growing soils of Assam in Northeast India

Cited by 15 publications

References 10 publications

Effects of straw and plastic film mulching on microbial functional genes involved in soil nitrogen cycling

Effects of straw and plastic film mulching on microbial functional genes involved in soil nitrogen cycling

Enhanced microbial respiration due to carbon sequestration in pruning litter incorporated soil reduced the net carbon dioxide flux from atmosphere to tea ecosystem

STATUS KARBON ORGANIK DAN NITROGEN TOTAL TANAH SERTA PERTUMBUHAN JAGUNG (Zea mays L.) AKIBAT APLIKASI FUNGI SELULOLITIK INDIGENOUS DAN JERAMI PADI PADA INCEPTISOL ACEH

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